Innovative Design of Outdoor Land Rescue Stretchers Based on FMEA and JACK
In order to effectively design a land rescue stretcher that conforms to the ergonomic principle and reduce the risk of skeletal muscle injury caused by rescue workers in the use of rescue stretchers,a method combining potential failure mode and effects analysis(FMEA)and JACK ergonomic simulation was adopted in this study.First,the risk priority level(RPN)is calculated to determine the proportion of potential failure modes of the rescue stretcher.Then,the musculoskeletal fatigue degree of P5 and P95 rescue workers was compared by JACK simulation data,such as back analysis(LBA),static strength prediction(SSP),etc.,and corresponding improvement measures were developed.Finally,JACK simulation and FMEA analysis were used to verify the feasibility of the improved design of the rescue stretcher.The combination of FMEA and JACK simulation can accurately explore the key factors affecting the human-machine relationship.Simulation data show that through improved design,the degree of musculoskeletal fatigue of rescue personnel is effectively controlled,and the process of stretcher unloading is more stable.